# Anisotropic inflation with a non-minimally coupled electromagnetic field to gravity

@article{Adak2016AnisotropicIW, title={Anisotropic inflation with a non-minimally coupled electromagnetic field to gravity}, author={Muzaffer Adak and {\"O}zg{\"u}r Akarsu and Tekin Dereli and {\"O}zcan Sert}, journal={Journal of Cosmology and Astroparticle Physics}, year={2016}, volume={2017}, pages={026 - 026} }

We consider the non-minimal model of gravity in Y(R) F2-form. We investigate a particular case of the model, for which the higher order derivatives are eliminated but the scalar curvature R is kept to be dynamical via the constraint YRFmnFmn =−2/κ2. The effective fluid obtained can be represented by interacting electromagnetic field and vacuum depending on Y(R), namely, the energy density of the vacuum tracks R while energy density of the conventional electromagnetic field is dynamically scaled…

## 18 Citations

### Anisotropic inflation in non-minimal kinetic coupling model

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2022

We study anisotropic inflation in non-minimal derivative coupling model where the scalar field non-minimally coupled to the U(1) gauge fields and derivative of the scalar field non-minimally coupled…

### Radiation ﬂuid stars in the non-minimally coupled Y ( R ) F 2 gravity

- Physics
- 2017

We propose a non-minimally coupled gravity model in Y ( R ) F 2 form to describe the radiation ﬂuid stars which have the radiative equation of state between the energy density ρ and the pressure p…

### Compact stars in the non-minimally coupled electromagnetic fields to gravity

- Physics
- 2018

We investigate the gravitational models with the non-minimal $$Y(R)F^2$$Y(R)F2 coupled electromagnetic fields to gravity, in order to describe charged compact stars, where Y(R) denotes a function of…

### Anisotropic power-law inflation for a conformal-violating Maxwell model

- Physics
- 2017

A set of power-law solutions of a conformal-violating Maxwell model with a non-standard scalar-vector coupling will be shown in this paper. In particular, we are interested in a coupling term of the…

### Gravastars in a non-minimally coupled gravity with electromagnetism

- PhysicsThe European Physical Journal C
- 2021

In this paper we investigate the gravitational vacuum stars which called gravastars in the non-minimally coupled models with electromagnetic and gravitational fields. We consider two non-minimal…

### Anisotropic power-law inflation for a model of two scalar and two vector fields

- Physics, MathematicsThe European Physical Journal C
- 2021

Inspired by an interesting counterexample to the cosmic no-hair conjecture found in a supergravity-motivated model recently, we propose a multi-field extension, in which two scalar fields are allowed…

### Anisotropic stars in the non-minimal Y ( R ) F 2 gravity

- Physics, Geology
- 2018

We investigate anisotropic compact stars in the non-minimal Y ( R ) F 2 model of gravity which couples an arbitrary function of curvature scalar Y ( R ) to the electro-magneticﬁeldinvariant F 2…

### Radiation fluid stars in the non-minimally coupled $$Y(R)F^2$$Y(R)F2 gravity

- Physics
- 2016

We propose a non-minimally coupled gravity model in $$ Y(R)F^2 $$Y(R)F2 form to describe the radiation fluid stars which have the radiative equation of state between the energy density $$\rho $$ρ and…

### Anisotropic stars in the non-minimal $$Y(R)F^2$$Y(R)F2 gravity

- Physics, GeologyThe European Physical Journal C
- 2018

We investigate anisotropic compact stars in the non-minimal $$Y(R)F^2$$Y(R)F2 model of gravity which couples an arbitrary function of curvature scalar Y(R) to the electromagnetic field invariant…

### Cosmology with variable G and nonlinear electrodynamics

- PhysicsIndian Journal of Physics
- 2020

In a bid to resolve lingering problems in cosmology, more focus is being tilted towards cosmological models in which physical constants of nature are not necessarily real constants but vary with…

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